package com.program.facesigninsystem.service;

import com.program.facesigninsystem.entity.Friend;

import java.util.List;
import java.util.Map;

public interface IFriendService {
    void insertFriend(String user_id,String friend_id);
    Friend selectExist(String user_id,String friend_id);
    List<Map<String,Object>> selectByOrder(String user_id);
    List<Map<String,Object>> overallRanking();
    List<Map<String,Object>> scoreRank();
}
